Electric machine for covering wire



(N0 Model 2 Sheets-Sheet 1. F. E. DAVIS 82 J. SCOTT, Jr. ELECTRIC MACHINE FOR COVERING WIRE, (Sac. No. 425,990. Patented Apr. 22, 1890.

WITNESSES:

(No Model.) 2 Sheets-Sheet 2.

P. E. DAVIS 86 J. SCOTT, Jr. ELECTRIC MACHINE FOR COVERING WIRE, &o.

No. 425,990. Patented Apr. 22, 1890.

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WITNESSES: %@m F mawfl Q f44 UNITE STATES PATENT OFFICE.

FRANK E. DAVIS, OF BOSTON, AND JOHN SCOTT, JR, OF PLYMOUTH, MASSACHUSETTS.

ELECTRIC MACHINE FOR COVERING WIRE, 840.

SPECIFICATION forming part Of Letters Patent No. 425,990, dated April 22, 1890.

Application filed September 13, 1889. Serial No. 323,804- (No model.)

To aZZ whom it may concern.-

Be it known that we, FRANK E. DAVIS and JOHN SCOTT, J r., citizens of the United States, and residing, respectively, at Boston, in the county of Suffolk and Commonwealth of Massachusetts, and at Plymouth, in the county of Plymouth, in said Commonwealth, have invented a certain new and useful Electric Machine for Covering W'ire, &c., of which the following description, in connection with the accompanying drawings, is a specification.

Our invention relates to devices for actuatin g the operative parts of machines for covering wire or other cores with a thread or other material, and has for its object the production of a simple, compact, and convenient machine which shall be easily regulated and capable of performing its work with great rapidity and uniformity.

The invention consists in the arrangement and combination of electrical devices for actuating the several parts of a covering-machine, as hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of a winder. Fig. 2 is a transverse section of the same. Fig. 3 is a diagram of the electrical connections. Fig. 4c is an enlarged detail view of the switch indicated in Fig. 3. Fig. 5 is a side elevation of a multiple winder, parts being removed. Fig. 6 is an end elevation of the same with parts shown in dotted lines, and Fig. 7 is a diagram of certain electrical connections to be referred to.

The single winder represented in Figs. 1 and 2 consists, briefly, of the two covering or Winding heads B B and the winding or feed drum E, supported on a suitable frame A. The two winding-heads are alike, and a description of one will suifice for both. Upon the frame is secured an electric motor D, having the usual. armature B, field-coils B and field-magnets I3 and generally of usual. construction save that the shaft Z) is hollow to permit the passage therethrough of the wire or other core to be covered. Secured to the end of the hollow shaft b is the flier C, which may be of the same construction as those shown in our application filed July 8, 1889, Serial No. 316,810, being adapted to support a spool l) of the covering material upon a hollow spindle If within the detachable yoke Z). By thus placing the flier upon the end of the hollow shaft of an electric motor we are enabled to dispense with all external drivinggear and intermediate connections to drive the flier at high speed and to obtain certain other desirable results hereinafter referred to.

Upon the flier and normally held from con tact therewith by the thread in its passage through the eyes I) and I) is insulatingly secured a spring contact-point p, which is connected through conductor 0 insulated ring 0 and conductor 0 with a generator K and magnet L, (see Fig. 7,) connections being also made from said magnet to the flier or its shaft through the conductor 0 and its 0011- tact-point resting on the shaft, as indicated in Figs. 1 and 7. It will be seen that by this arrangement, which is the same as that shown in our said application, the keeper of the magnet L will be attracted upon the breaking or failure of the covering-thread, for a purpose presently to be described.

The winding or feed drum E, which draws the wire through the machine, is driven from one of the motors by a gear f on the shaft thereof, which meshes with a gear f upon a shaft F, which in turn drives the drum through the worm f and worm-wheel c.

The current is conducted from the dynamo or other generator to the motors by the wires 7L It, Fig. 3, in which a switch or cut-out G is interposed for use when it is desired to cut out the machine entirely. From the switch G the current is carried through the fieldcoils 13 through the usual resistances M, by which the motors may be adjusted to the same speed, by the circuit 71. it. As shown, the field-magnets of the two motors are arranged in multiple are; but, if desired, they may be in series, in which case but one set of resistances M will be needed.

The current is carried to both the armatu res of the two motors by the circuit h 7L3, which, as clearly appears, is separate from the field-magnet circuit. As here shown, the armatures of the two motors are in multiple are. They may, if desired, be in series.

In the circuit 7L2 7L3 are interposed certain devices for regulating and shutting down the ICQ motors, which will now be described. The wire 77?, as shown, passes directly to the armature; but in the course of the wire h is interposed a contact-plate R in the form of an arc of a circle, in contact with which rests one end of a switch-lever P, pivoted at p, the other end of said lever resting normally upon the continuation of said wire 7L3, and the lever thus forming a bridge over the break in said wire. The lever is subject to the action of a spring 0', but is restrained from move ment until the thread fails or it is desired to slow down the motors by a latch 0 which is the keeper of the magnet L, above referred to.

In order that the lever P may not move too rapidly when released, we have connected thereto a controlling device 0, which is shown as a dash-pot of usual construction. In the path of the end of the lever is a series of resistances X X X having their contact-blocks separated by a space less than the width of the contact-face of the lever. Another resistance X is provided, having its contact-blocks separated from the contact-block of the last resistance X by a space greater than the width of the contact-face of the lever. \Vhen the one end of the lever P is on the contact block of resistance X, the other end will rest upon a contact-block Q, formed on the wire 7L2.

The operation of the abovedescribed devices is as follows: 'The upper end of the switch-lever P when released is thrown by the spring 0 toward the left, bringing its end successively in contact with the contact-blocks of the resistances X X X its lower end remaining inco ntact with the are R. The effect of this movement is gradually to increase the resistance of the armature-circuit, and thereby reduce the speed of the motor. movement of the switchlever P moves the upper end of the lever off from the contactblocks of resistance X and at the same time moves the lower end of the lever off from the are R, thus breaking the circuit. The final movement of lever P brings its upper end onto the contact-block of resistance X and at the same'time brings its lower end onto the contact-block Q and closes the armaturecircuit on the resistances X X X X. It will be clear from this description that the action of the switch-lever when released is to successively insert resistances in the armature-circuit, break the circuit, and short-circuit the armatures on resistance." The resistance X on which the armatures are shortcircuited, may, if desired, be separate from the resistances X X X which are inserted in the circuit. By arrangingboth the armatures in the same circuit their rotation at the same speed is secured. If one armature tends to run faster than the other, the first will become practically a generator to the second and supply it with current to accelerate its speed, at the same time the extra effort exhausting its tendency to run faster. It will be observed that the field-coils are unchanged in the ordinary operation of the machine, the

The further switch G being used only when the whole machine is to be put out of use.

It is evident that the arrangement of devices above described for a single winder can be applied to a multiple winder by building many armatures into one piece of iron, which, having the field-coils formed about it, constitutes the field-magnets for the armatures. Thus all the work of inspection and management may be brought into a narrow compass and the capacity of a workman greatly increased without interfering in any degree withthe complete independence of each machine. A series of armatures is arranged, as shown, between the parts of each of the multiple pole-pieces B These multiple pole-pieces may be formed in one piece or may be made up of several pieces. On these multiple polepieces are wound the field-coils B there being a number of these coils on each half of each multiple pole-piece corresponding to the number of armatures. All the coils of both multiple pole-pieces are p refer-ably in the same circuit, either in series or in multiple are, and the circuit of the coils is separate from the ariiiaturecircuit. The circuits in the multiple machine are the same asin the single machine, and are equally well rep resented by Fig. 3, in which B B maybe taken as representing the series of coils of the multiple pole-pieces. The armature-circuit, as shown in this View, includes two armatures onlyto wit, the corresponding armatures in the two pole-piecesand there are as many armature-circuits as there are pairs of armatu res. Each armatureeircuit is provided with the switch shown in Fig. 4, which has been fully described, and each of the fliers carried by the armatures is provided with a spring contact-point p in circuit with the electro-magnet L, &c., as in the single machine. Each pair of armatures is provided with the same stopping mechanism throughout that is used in the single machine; but the stopping devices of each pair are entirely distinct from that of every other pair. These devices being mere duplications of that shown, we have not considered it necessary to illustrate them further.

I The only difference in the circuits of the multiple machine and those of a number of single machines is that, as has been before stated, the coils'of the multiple pole-pieces are all in the same circuit,so that in the multiple machine we have one circuit including all the coils of the multiple pole-pieces and as many annature-circuits as there are pairs of armatures. The feed-drums E in the multiple ma chine correspond in number to the pairs of armatures, and each feed-drum is driven, as in the single winder, from one of the corresponding motors. \Ve have shown the covered wire or core as passing around the feed- (lrum E and thence to a reel E, which is driven frictionally from the feed-drum, as by pulley e e and belt 6 It will be understood that the number of the armatures may be varied as desired.

ICO

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Usually but two for each wire will be used; but any number may be used.

YVe do not claim herein the combination of a plurality of electric motors having all their armatures in the same circuit with a switch in said circuit and means for operating the switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armatures, as the same forms the subjectmatter of another application filed by us November 19, 1989, and bearing the serial number 330,879.

Having described our invention, what we claim is 1. An electric motor having a hollow armature-shaft for the passage of material, in combination with devices carried by the armature shaft adapted for operating in connection with such material.

2. An electric motor having a hollow armature-shaft for the passage of the core, in combination with a flier carried by the armatureshaft and adapted to wind covering material on such core.

3. An electric motor having a hollow armature-shaft for the passage of the core, in com bination with a flier carried by the armatureshaft and adapted to receive a spool for the covering material.

t. An electric motor having a hollow armature-shaft for the passage of material and devices carried by the armature-shaft for operating in connection with the material, in combination with devices operated by the motor for drawing the material through the hollow armature-shaft.

5. An electric motor having a hollow armature-shaft for the passage of the core and a flier carried by the armature-shaft adapted to wind covering material on the core, in combination with a winding-drum and mechanism operated by the motor to actuate the winding drum to draw the core through the hollow arm ature-shaft.

(3. An electric motor having a hollow armature-shaft for the passage of the core and a flier carried by the armature-shaft for winding covering material on the core, in combination with devices for shutting down the motor and devices adapted to be actuated by the failure of the covering material for releasing said flrst-named devices.

7. An electric motor having a hollow armature-shaft for the passage of material and devices carried by the armature-shaft adapted to operate in connection with the material as it passes through the armature-shaft, the armature and field-coils of the motor being on separate circuits, in combination with a switchin the armature-circuits and automatic means for operating the switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armature.

8. An electric motor having a hollow armature-shaft for the passage of the core, the armature being provided with a flier for winding covering material on a core, the armature and the field-coils of the motor being arranged in separate circuits, in combination with a switch in the armature-circuit and a spring for operating the switch to successively insert resistances in the circuit,break the circuit, and short-circuit the armature.

9. An electric motor having a hollow armature-shaft for the passage of a core, the armatu re being )rovided with a flier for winding covering material on the core, the armature and the field-coils of the motor being arranged in separate circuits, in combination with a switch in the armaturc-circuit, a spring for operating the switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armature, a catch engaging the switch, an eleetromagnet arranged to operate the catch, and devices carried by the flier in engagement with the covering material and in circuit with the electro-magnet, whereby on failure of the covering material the electro-magnet is actuated to operate the catch and release the switch.

10. An electric motor having a hollow armature-shaft for the passage of a core and a flier carried by the armature-shaft for winding covering material on the core, the armature and the field-coils of the motor being on separate circuits, a switch in the armature-circuit, and automatic means for operating the switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armature, in combination with a winding-drum adapted to draw the coil through the hollow armature-shaft and mechanism operated by the motor to actuate the drum.

11. A pluralityof electric motors each having a hollow armature-shaft for the passage of material and devices for operating in connection with the material as it passes through the armature shaft, the field-coils of all the motors being in a single circuit and the armatures being all in a single circuit separate from the field-magnet circuit.

12. A pluralityof electric motors each having a hollow armature-shaft for the passage of a core, each armature'shaft carrying a flier for winding covering material 011 the core, the field-coils of all of the motors being in a single circuit and the armatures being all in a single circuit separate from the ficld-magnet circuit.

13. A plurality of electric motors each having ahollow armature-shaft for the passage of material, each armature shaft carrying devices for operating in connection with the material as it passes through the hollow armature-shaft, the field-coils of all the motors being in a single circuit and the armatures being all in a single circuit separate from the field-magnet circuit, in combination with a switch in the armature-circuit and means for operating the switch to successively insert resistances in the armature circuit, break the circuit through the armatures, and short-circuit the armatures.

ll. A plurality of electric motors each hav ing a hollow armature-shaft for the passage of a core, each armature-shaft carrying a flier for winding covering material on the core, the armatures of all the motors being arranged in a single circuit, a switch in the armature-circuit, a spring for operating the switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armatures, a catch engaging the switch-lever, an electro-magnet arranged to operate the catch, and devices carried by the fliers in engagement with the covering material and in circuit with the electro-magnet, whereby on failure of the covering material the electro-magnet is actuated to operate the catch and release the switch-lever.

15. A multiple pole-piece arranged to receive a plurality of armatures, in combination with armatures each having a hollo shaft provided with a flier.

16. A multiple pole-piece arranged to receive a plurality of armatures and having a plurality of field-coilsthereon, in combination with armatures each having a hollow shaft provided with a flier, the several coils of the multiple pole-piece being all in the same circuit and the armatures being each in a circuit separate from the field-circuit and from the other armature-circuits.

. 17. A multiple pole-piece arranged to receive a plurality of armatures and having a plurality of field-coils thereon, in combination with armatures each having a hollow shaft provided with a flier, the several coils of the multiple pole-piece being all in the same circuit and the armatures being each in a circuit separate from the field-circuit and from the other armature-0i rcuits, and a switch break the circuit, and short-circuit the armatures.

18. Two or more multiple pole-pieces each arranged to receive a plurality of armatures and each having a plurality of field-coils thereon, in combination with armatures having hollow shafts and carrying fliers, the several coils of the several multiple polepieces being all in the same circuit and each armature in one multiple pole-piece and the corresponding armature in the other multiple pole-pieces being in a circuit separate from the field-circuit and from the other armaturecircuits.

19. Two or more multiple pole-pieces each arranged to receive a plurality of armatures and having a plurality of field-coils thereon, in combination with armatures having hollow shafts and carrying fliers, the several coils of the several multiple pole-pieces being all in the same circuit and each armature in one multiple pole-piece and the corresponding armature in the other multiple pole-pieces being in a circuit separate from the field-circuit and from the other armature-circuits, a switch in each of the separate armature-circuits, and automatic means foroperating each switch to successively insert resistances in the circuit, break the circuit, and short-circuit the armatures.

FRANK E. DAVIS. JOHN SCOTT, JR. WVitnesses:

CHARLES F. J ENNEY, WILLIAM L. STEVENS. 

